Why is artificial sweetening agent, Aspartame used only in soft drinks and cold foods?

Draw labelled diagram of electrolytic cell for the extraction of aluminium and the overall reaction taking place in it.

What is anionic detergent? Write an example

Write any one difference between antiseptics and disinfectants.

Draw labelled diagram of Zone refining process. In which this process is useful ?

What is half-life period of reaction ? Justify from the rate equation for first order reactions that the half-life period for such reaction is independent of the initial concentrations of the reactants.

What are non-narcotic analgesics? Write an example

Why are chemicals added to food? Write any two reasons.

Write any one difference between board spectrum and narrow spectrum antibiotics.

Assuming that atoms are touching each other, calculate the efficiency of packing in case of a crystal for simple cubic metal.

On the basis of nature of ionic solids compare Frenkel defect with Schottky defect.

Will the elevation in boiling point be same if 0·1 mole of sodium chloride or 0·1 mole of sugar is dissolved in 1 L of water ?

Can we separate the compounds of azeotropic mixture by fractional distillation ? Explain.

What happens to vapour pressure of water if a tablespoon of sugar is added to it ?

Which colligative property is preferred for the molar mass determination of macromolecules ?

Describe the method for the preparation of gold colloidal sol with diagram.

What is the difference between a sol and a gel ?

What is coagulation ? Explain.

Describe the method for the purification of colloidal sol containing excess amount of electrolytes with diagram.

What is the difference between aerosol and foam ?

What is peptization ? Explain

Write the chemical formulae of four oxy acids of chlorine.

Write the general electronic configuration of noble gas group. Which element of this group is useful in magnetic resonance imaging (MRI) ?

Write the chemical reactions of C2H5OH with PCl3 and PCl5 separately.

Write the chemical formulae of four oxy acids of sulphur.

Write the general electronic configuration of chalcogen group. Write the chemical formula of epsom salt.

Ammonia act as a Lewis base. Explain.

Explain the following with suitable example :

A) Rosenmund reduction

B) Gatterman-Koch reaction.

C) Clemmensen reduction

E) Stephen reaction.

51. Explain the following :

(a) Antiseptics (b) Artificial sweetening (c) Antacids.

(e) Disinfectants (f) Food preservatives (g) Tranquilizers.

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